Combination dusting and spraying machine



Jan. 29, 1952 B. M. GADDIS 2,583,560

COMBINATION DUSTING AND SPRAYING MACHINE Filed May 25, 1946 e Sheets-Sheet 1 .B.M.GADDIS Jan. 29, 1952 GADDls 2,583,560

COMBINATION DUSTING AND SPRAYING MACHINE Filed May 25, 1946 6 Sheets-Sheet 2 ,z igz.

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COMBINATION DUSTING AND SPRAYING MACHINE Filed May 23, 1946 6 Sheets-Sheet 6 B.M.GADDIS Patented Jan. 29, 1952 oomnmnom DUSTING AND -srnamo momma pm a. Gaddis, Washington, 1).. a; dedicated to theh'ee use of the Peoplein theterritoryof the United States a tudam.my.zs, .1946, Serial No. 671.716

(Granted under the act oi :March .3, 1883, as

amended All! .30, 1928; 3.7.0 .0. 15.7)

2 Glnims'.

This application is snade :under the act of without the payment to me 201' any royalty thereon.

I hereby dedicate the invention :herein described to the three of the people in the ;ter-

:rltory of the United States to takeefiect on the grant-ingofapatenttome.

This inyention :relates devices 1dr dispersing finely divided materials and is more particularly concerned with such. a device which can be used to apply such to large agricultural areas.

One 0.! the objects of this invezrtionhis the provision .of a machine of the type mentioned which can be used to ap ly insecticides, fungiciti plant growth substances, such as plant regulants, herbicides, seeds, and other materials .in the dorm of sprays and dusts, either simultaneously or separately.

Another object or :this myentlon "m the -provision .of such a machine which can be to apply simultaneously :more than one time of material.

A further object of this invention is :the provision of :such a machine which has a large :capacity and which can he used to cover-lame areas in a very short time.

.A still further object of'this invention is the provision of a machine of the type mentioned which, in conjunction with a tractor, can be used to discharge the material or :at any point from one :side of the tractor to the other and can also be used to discharge the material or materials uniformly across a swath much greater than the width of the tractor.

A still further objective is to "permit the use of the machine on vegetation of various heights, such as from the ground -to the top of trees.

Other objects and advantages of this invention will be apparent from the following description considered together with the accompanying drawing illustrating a preferred embodiment of the invention with various modifications thereof.

In the drawing:

Figure l is a side elevations-'1 "view or a tractor zshowingan embodimento! my invention attached thereto with some parts broken away.

Figure 2 is a plan view or the same re .3 is a three-dimemional or the tanks and piping system apart from the other elements of the embodiment.

Figure 4 is a section along the line 4-4 of Figure 1.

Figure 5 is a detailed plan view of the oscillating mechanism.

Figure 6 :is a sectionv along the line 6-4 of Figure .5.

Figure 7 is a longitudinal section dustdrum and air blower.

Figure 8 is a partial section along the .line 8-8 of Figure '7.

Figure 9 is an elevational view, with parts broken away, of the side opposite that of Figure "1 showing the means for revolving the dust drum.

Figure 10 is a section-on line til-Ill of 1.1 of amodified form of the combined liquid spray and air nozzle.

Figure 11 is an end elevational view of the modification shown in Figure 10.

' Referring with more particularity to Figures '1 to '9 of the drawing, in which like numerals designate like parts, the invention is associated with an ordinary tractor '21 having a motor 22 at the front. At the :front of the tractor. tanks 28 and 24 are secured on brackets 25 and 26, respectively, said brackets being secured to the frame of the tractor. ,At the bottom of each tank an outlet pipe 21 and 28, respectively, is connected, which pipes are connected together with a transverse pipe 29. The outlet pipes 21 and 28 are provided'with valves 30 and 31.

There is mounted on the tractor a pump such as the centrifugal pump 32 on a bracket 33,-driven by the side power take-off 32A of the tractor, the inlet 34 of which is connected to the transverse pipe 29 through a strainer 35. The outlet of the pump 32 is: connected to a pipe 36 which extends to the rear of the tractor where it is connectedtwa flexible liquid hose 31. A handoperated control valve 86A is connected in the pipeline 36 near the drivers seat.

Within each .of the tanks '23 and 24, there is secured, at a'polnt near the bottom, a longitudinal pipe '88 and 3.9, respectively. The'forward ends of said pipes 38 and 39 are sealed and the rearward ends are mutually connected together by means of a transverse pipe All on 'the'outside o! the tanks. Said pipes 38 and 39 are provided with apertures I1 and 42, respectively. The pipe '40 is connected to the pipe 86 by'means of a pipe :43. Between the point of connection between pipes 43 and 4c and the pipes :38 .andtdl. valves 44 and 45, respectively, are provided in the pipe 4n. By these means liquid is through the from the tanks 23 and 24 and discharged into the hose 31, a small part being re-cycled into the tanks through the transverse pipe 40 and longitudinal pipes 38 and 39.

On the rear of the tractor there is mounted a duster of any suitable type having an air blower 46 and a rotatable dust drum 41, said drum being.

provided with any suitable means for metering or discharging dust therein into the blower. The outlet of the blower is disposed at the top and is connected to a rearwardly extending pipe 48 to which is attached a flexible air hose 49. The fan a of the blower is secured to a shaft 50 J'ournaled in bearings 5| and 52. Between these bearings a pulley 53 is secured which is connected by a belt 54 to another pulley 55 on a power take-off 56 of the motor.

The drum 4! is mounted on a stationary hollow shaft 51 within which shaft there is disposed a screw conveyer 58. The rearward part of the shaft 51 has a cut-out section 59 into which dust feeds as the drum 4'! rotates. The dust is directed to this point by means of vanes 60, which are secured to the inner wall of the drum. The dust is distributed over the cut-out portion 59 by means of rotatable blades BI which are longitudinally disposed adjacent to the shaft 51 and are held together by rings 62 and 63. These rings are attached to the stationary hollow shaft 51 in which shaft 85, also hollow, turns. The blades GI are secured to the drum by means of an arm 64 projecting from the inner wall of the drum.

The screw 58 is secured to the end of shaft 65 which projects outwardly from the rear of the drum and is attached to a cone of pulleys 85. A corresponding cone of pulleys 51 is mounted on a longitudinal shaft 58 on the side of the drum 41. The pulleys 66 and 61 are connected with a belt 69. Said shaft 68 is rotatably mounted in bearings on arms 10, II, and 12; said arms being hingedly mounted to a frame member 13. The other end of the shaft 68 is secured to a pulley H which is driven by another pulle 15 on the shaft 50, by means of a belt IS.

The drum 4! is rotated by a belt 11 which belt is drivenby a pulley I8 on the shaft 68. The belt 11. however, is normally loose about the pulley I8 and drum 4'! and is set in motion by means of an idler pulley or belt tightener 19, mounted on the crank arm 80 of a shaft 8I above the shaft 68 on the arms II and 12. The belts 16 and 69 are tensioned by means of springs 82, 83 and 84, between the arms I0. TI and 12, respectively, and the frame.

At the rear of the tractor, there is rotatably mounted on brackets 85 and 86 a pinion 81 in a horizontal plane on a vertical shaft 88. There is radially connected to the pinion 81 one end of a rearwardly projecting arm 89. The pinion 81 meshes with a rack 90 slidably mounted on the bracket 86 in a channel member 9|. The rack 90 is connected to an eccentric strap 92 by means of the eccentric rod 93. The eccentric strap 92 is driven by an eccentric sheave 94 on the end of a shaft 95. The shaft 95 is rotatably mounted in bearings 96 and 91 on a bracket 98 secured to a frame member 99. The other end of the shaft 95 is secured to a pulley I which is connected by a belt IOI to a pulley I02 on a longitudinal shaft I03. The shaft I03 is rotatably mounted in bearings I04 and I which are secured to brackets I06 and I0! depending from the frame member 99. The forward end of the shaft I03 carries a pulley I08 which is connected by a belt I09 to a pulley M0 on the power take-off shaft 56.

The rearward end of the hose 49 is provided with a spray nozzle which is composed of an air nozzle III at the center of which there is disposed a liquid spray nozzle -I I2having an outwardly diverging flange II2A and a concave or recessed face I I2B. This shape of the liquid spray nozzle creates a suction effect at its outlet when high velocity air flows around it resulting in atomization of the liquid. The liquid spray nozzle is attached to the end of a tube H3. The tube H3 is bent at right angles and passes through the wall ofthe air nozzle III where it is rigidly secured to the air nozzle by any suitable means, such as W lding. The other end of the tube II3 on the outside of the air nozzle III is connected to the hose 31.

The air nozzle III is adjustably supported on the arm '89 by any suitable means permitting transverse oscillation. The means illustrated comprises a link H4, the upper end of which is hinged to a vertical bracket IIIA secured to the air nozzle I I I and the lower'end to a vertical bar H5, the latter being slidably mounted at the outer end of the'arm 89 in a boss I I8. 'Above the boss H8, there is slidably disposed around the bar I I5 a collar IILwhich collar is provided with a' set screw II8 to lock itin position. By these means the upper end of the bar II5 may be vertically adjusted on the arm 89.

The machine may be operated in any one of a number of different ways depending upon the type of material or materials desired to be dispersed. In this connection, it should be noted that materials in dust form may be dispersed alone, liquid spray materials may be dispersed alone or both dust materials and liquid spray materials may be dispersed simultaneously.

In dispersing liquid sprays, the material to be dispersed is disposed in one or bothof the tanks 23 and 24, and this may be in the form of a solution, suspension, emulsion or other liquid form. Also, a material may be placed in one of the tanks different from the material in the other for simultaneous or alternate dispersion. This is particularly desirable in cases of incompatible materials, particularly materials which are compatible only when in contact with each other for short periods of time, such as certain insecticides and fungicides. The materials in the tanks are withdrawn therefrom by means of the pump 32 and delivered through the pipe 38, hose 31, 'tube H3 to the nozzle II2 where they emerge.

The pressure forcing the liquid to the liquid spray nozzle is of a low magnitude and should be just enough to force the liquid out of the nozzle without atomizing it in any way. In this connection, itshould be noted that atomization is not affected by the liquid spray nozzle by virtue of the pressure of the liquid but rather by virtue of the air flowing around the nozzle. This air, is delivered through the hose 49 from the outlet pipe 48 of the blower. In order to effect a satisfactory spray, it is preferred that the contour of the liquid spray nozzle be such that a partial vacuum is created at the outlet point of the nozzle II2. This may be done by various means, one of which is to provide the liquid spray nozzle with the flared or conical shaped flange I I2A and the recessed or concave face II2B. In order to obtain a satisfactory spray, it is necessary for'the air velocity to be extremely high. In practice it was found that this should be not less than about miles per hour. Also, the liquid pressure must be low and, as stated above, should be higher air velocity is needed, but even under such circumstances a satisfactory spray is not obtained as when using extremely low liquid pressures. Various spray characteristics may be provided by employing modifications in the liquid spray nozzle and the air nozzle. For example, where a penetrating effect is desired, such as where trees having a heavy foliage are to be sprayed, it is possible to increase the depth of penetration by diagonally corrugating the inner wall of the air nozzle III or providing it with fins I20, such as illustrated in Figures and 11. To assist this action, the outer conical surface of the liquid spray nozzle may also be provided with rifling or grooves H2 in the same general direction as the corrugations or fins I20. However, by reversing the direction of the rifiing or grooves on the liquid spray nozzle, it is possible to create a greater turbulence effect at the discharge end which is often desired for certain types of dispersion.

A part of the liquid leaving the pump 32 is returned through the pipes 43 and 40, and 38 and 39 into the tanks through the apertures 4| and 42. This results in agitation of the liquid in the tank which is beneficial in cases where materials which settle rapidly are used, such as suspensions, emulsions, and so forth. However, where such materials are not used, such agitation is not necessary, under which circumstances the valves 44 and 45 are closed. It is to be understood that other agitating means, such as mechanical agitators, may be used instead of or in conjunction with these hydraulic means.

Concomitant with the delivery of the material from the spray nozzle I I2, the arm 89 is oscillated back and forth by means of the rack and pinion 90 and 81, said rack being reciprocated by means of the eccentric driven by the shaft 95 which gets its power from the power take-off 56 by the means previously described. a

When it is desired to use the machine for dispersing materials in dust form, the belt 11 is tightened with the idler l9, and the drum 41 is thus caused to rotate. This has the effect of deg liverin'g dust material in the drum around the cut-out section 59 from which it is withdrawn by the conveyor screw 58 to the inlet of the blower 46 from whence it is carried through the blower and discharged into the hose 49. By closing the valves 3|] and 3|, the liquid is held in the tanks 23 and 24, thereby permitting the machine to discharge dust only. However, by turning on the valves 30 and 3|, both the dust material and the liquid spray may discharge simultaneously.

Having thus described my invention, I claim: 1. An insecticide spraying device having a flexible hose and a spray nozzle at the free end thereof, in combination with a vertical support for said free end of said hose, a horizontal arm, said vertical support being connected for vertical adjustment to one end of said arm, a horizontal pinion secured to the other end of said arm, said pinion being rotatably mounted on a stationary pivot, a rack mounted for reciprocation and en- --gaging said pinion, and means for reciprocating said rack, whereby as the rack is reciprocated a imparted to said support and nozzle about said pivot.

2. An insecticide spraying device having a flexible hose and a spray nozzle at the free end thereof, in combination with a vertical support for said free end of said hose, a horizontal arm, said vertical support being connected for vertical adjustment to one end of said arm, a horizontal pinion secured to the other end of said arm, said pinion being rotatably mounted on a stationary pivot, a rack mounted for reciprocation and engaging said pinion, an eccentric, a connecting link between said eccentric and said rack, and means for revolving said eccentric, whereby as the said eccentric is revolved a horizontally oscillating motion is automatically imparted to said support and nozzle about said pivot.

BEVY M. GADDIS.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 634,524 Franklin Oct. 10, 1899 716,459 Muller Dec. 23, 1902 813,254 Sweeney Feb. 20, 1906 950,916 Hayes Mar. 1, 1910 1,005,822 Ford Oct. 17, 1911 1,374,551 Clarke Apr. 12, 1921 1,495,098 Nelson May 20, 1924 1,785,932 Brown et al Dec. 23, 1930 1,846,938 Benjamin Feb. 23, 1932 2,062,294 Cary et a1. Dec. 1, 1936 2,210,846 Aghnides Aug. 6, 1940 2,329,331 Brosmer Sept. 14, 1943 2,365,755 Griffith Dec. 26, 1944 2,453,368 Goodwin -1 Nov. 9, 1948 FOREIGN PATENTS Number Country Date 225,094 Great Britain Nov. 27, 1924 470,166 Germany Dec. 20, 1928 602,019 Germany Aug. 16, 1934 

